21288+7756
- Unique Name: 21288+7756HU 771
- RA: 21 28 47.15
- Dec: +77 56 06.8
- Discoverer: HU
- Discoverer Number: 771
- Components:
- First year: 1904
- Last year: 1991
- Observations: 7
- First position angle: 192
- Last position angle: 193
- First separation: 2.6
- Last separation: 2.6
- Mag first component: 7.45
- Mag second component: 10.8
- Spectral type: K0
- Primary proper motion RA: -7
- Primary proper motion DEC: -19
- Secondary proper motion RA: -9
- Secondary proper motion DEC: -18
- Durchmusterung: +77 823
- Notes: